[Glucose), mg / mL | Absorbance 0.132 5.000 10.00 20.00 30.00 0.290 0.498 0.642 40.00 0.750 a. Using the method of least-squares, give the equation of the best straight line through the points. b. Calculate the concentration of an unknown solution that gave an absorbance of 0.440. c. Give the correlation coefficient R and tell whether it is a good fit line or not.
[Glucose), mg / mL | Absorbance 0.132 5.000 10.00 20.00 30.00 0.290 0.498 0.642 40.00 0.750 a. Using the method of least-squares, give the equation of the best straight line through the points. b. Calculate the concentration of an unknown solution that gave an absorbance of 0.440. c. Give the correlation coefficient R and tell whether it is a good fit line or not.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The concentration of glucose in an aqueous solution can be determined by oxidation with ferricyanide ion, Fe(CN)6^3–. The absorbance of the ferricyanide ion measured at 420 nm increases as the concentration of glucose increases.
![TT
[Glucose], mg / mL
5.000
10.00
Absorbance
0.132
0.290
20.00
0.498
30.00
0.642
40.00
0.750
a.
Using the method of least-squares, give the equation of the best straight line through the points.
b. Calculate the concentration of an unknown solution that gave an absorbance of 0.440.
C.
Give the correlation coefficient R and tell whether it is a good fit line or not.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb837a9ae-50ce-4b3a-a9ef-94038c83610b%2Fded9b3a0-2c30-4401-9319-455fed1bba16%2Fu0giful_processed.jpeg&w=3840&q=75)
Transcribed Image Text:TT
[Glucose], mg / mL
5.000
10.00
Absorbance
0.132
0.290
20.00
0.498
30.00
0.642
40.00
0.750
a.
Using the method of least-squares, give the equation of the best straight line through the points.
b. Calculate the concentration of an unknown solution that gave an absorbance of 0.440.
C.
Give the correlation coefficient R and tell whether it is a good fit line or not.
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